91470642 has 16 divisors (see below), whose sum is σ = 193702752. Its totient is φ = 28696640.

The previous prime is 91470641. The next prime is 91470647. The reversal of 91470642 is 24607419.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (91470641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 448284 + ... + 448487.

It is an arithmetic number, because the mean of its divisors is an integer number (12106422).

Almost surely, 2^91470642 is an apocalyptic number.

91470642 is an abundant number, since it is smaller than the sum of its proper divisors (102232110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91470642 is a wasteful number, since it uses less digits than its factorization.

91470642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896793.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 91470642 is about 9564.0285444994. The cubic root of 91470642 is about 450.5682401740.

The spelling of 91470642 in words is "ninety-one million, four hundred seventy thousand, six hundred forty-two".